Since 203 is often a "Non-Authoritative" error, bypass any VPN or proxy to see if Google Drive works directly on your local network.
If you've canceled login prompts multiple times, your session may become "inactive," triggering a -203 error. 203 - Google Drive
Depending on how you use Google Drive, this error can manifest in a few different ways. Here is a deep dive into what Error 203 actually means and the best ways to fix it. What is Error Code 203? Since 203 is often a "Non-Authoritative" error, bypass
Understanding and Fixing Google Drive Error 203: A Complete Guide Here is a deep dive into what Error
Proxy servers, VPNs, or firewalls that modify data as it travels from Google to your screen.
For developers or those using integrated Google apps, a 203 error can occur if a background process "unexpectedly died" before finishing a request. How to Fix Google Drive Error 203
Ensure your connection is solid. A weak signal can cause data packets to be dropped or altered by intermediaries.